EP4266109A1

EP4266109A1 - Binocular telescope with digital display and laser ranging functions

Info

Publication number: EP4266109A1
Application number: EP22201108.2A
Authority: EP
Inventors: Zhongnan LIU; Ke Yang
Original assignee: Kunming Shunho Optics Co Ltd
Current assignee: Kunming Shunho Optics Co Ltd
Priority date: 2022-08-16
Filing date: 2022-10-12
Publication date: 2023-10-25
Also published as: CN115308895A

Abstract

A binocular telescope with digital display and laser ranging functions, which includes a binocular telescope body, a glass sheet and a limiting plate. A mounting groove and a limiting block are provided on an inner side of the binocular telescope body. An outer side of the limiting plate is provided with a thread. The limiting plate is threadingly and fixedly connected to an inner side of the mounting groove with the thread, t An outer side of the glass sheet is connected with the limiting plate in a clamping manner such that the glass sheet can be effectively clamped to the inner side of the objective hole of the binocular telescope body, and the two ends on the outer side of the limiting plate being both fixedly connected with the dial blocks can effectively help the limiting plate to rotate, thereby facilitating disassembly of the glass sheet.

Description

Technical Field

The present invention relates to the field of binocular telescopes, and in particular to a binocular telescope with digital display and laser ranging functions.

Background Art

Binoculars, also known as a "binocular telescope", is a telescope composed of two monocular telescopes side by side, in which the distance between two eyepieces can be adjusted to facilitate observation by both eyes at the same time, thereby realising three-dimensionality, which is often used in navigation, military surveillance, field observation, and so on.
Eyepieces and objectives on inner sides of lens barrels at both ends of an existing binocular telescope are directly exposed to the outside, so water vapour may adhere to their surfaces. In addition, as the water vapour may cause dust to adhere to their surfaces, it is easy to cause dust particles to exist on lenses after a long time of use, and it is inconvenient to wipe, resulting in the lenses becoming more and more blurred, which seriously affects the service life of the telescope.

Summary of the Invention

An object of the present invention is to provide a binocular telescope with digital display and laser ranging functions, so as to solve the above problems proposed in the background art.
In order to achieve the above object, the present invention provides the following technical solution: a binocular telescope with digital display and laser ranging functions, comprising:

a binocular telescope body, with an adjustment shaft for adjusting an angle of the binocular telescope body being provided in the middle of the binocular telescope body;
a glass sheet for shielding and protecting internal components of the binocular telescope body; and
a limiting plate for limiting and fixing the glass sheet;
a mounting groove and a limiting block are provided on an inner side of the binocular telescope body, the mounting groove and the limiting block are both fixedly connected to the inner side of the binocular telescope body, and the mounting groove is provided on an outer side of the limiting block; and
an outer side of the limiting plate is provided with a thread, the thread is provided in concert with the mounting groove, the limiting plate is threadingly and fixedly connected to an inner side of the mounting groove with the thread, and dial blocks are symmetrically and fixedly connected to two ends on an outer side of the limiting plate.

Preferably, an objective assembly, a beam-splitting and image-combining prism system and an eyepiece assembly are provided on the inner side of the binocular telescope body, the beam-splitting and image-combining prism system is provided between the objective assembly and the eyepiece assembly, the beam-splitting and image-combining prism system comprises a composite prism and a roof prism, and the composite prism is composed of a first right-angle prism, an isosceles prism and a second right-angle prism, where the first right-angle prism and the second right-angle prism have the same shape and symmetrically abut on two isosceles faces of the isosceles prism, respectively;
or the composite prism is composed of a first right-angle prism and a third right-angle prism, where a right-angle face of the third right-angle prism is longer than a hypotenuse face of the first right-angle prism, and the right-angle face abuts on the hypotenuse face of the first right-angle prism.
Preferably, the objective assembly comprises a third lens, a fourth lens and a fifth lens, where the third lens, the fourth lens and the fifth lens are all provided in a same axial direction, and the eyepiece assembly comprises a first lens and a second lens, where the first lens and the second lens are both provided in a same axial direction, a sixth lens and a seventh lens are provided between the first lens and the second lens, an eighth lens is provided between the second lens and the composite prism.
Preferably, under the condition that the composite prism is composed of a first right-angle prism and a third right-angle prism, reflection and transmission face and a beam-splitting face A are provided on an inner side of the composite prism, and a roof prism reflection and transmission face and a roof prism reflection face are provided on an inner side of the roof prism; a detector B is provided in parallel with and above the reflection and transmission face of the third right-angle prism, the observation focal plane on the outside of the first right-angle prism is provided with a transmission-type display device; in one of two optical paths of two barrels of the binocular telescope, an emission device is mounted in a position equivalent to that of the detector B; the beam splitting surface A is formed by coating a beam splitting film on the hypotenuse face of the first right-angle prism.
Preferably, the requirements for the coating of the beam splitting surface A include the following: under the condition that a wavelength is 400~635±15nm, Tave≥98%, Tmin≥96%, T550≥99%; under the condition that the wavelength is 670~720±20nm, Tave≥90%, Tave is the average transmittance, Tmin is the minimum transmittance, T550 is the transmittance when the wavelength is 550nm; full-surface coating on the hypotenuse face of the first right-angle prism.
Preferably, under the condition that a composite prism is composed of an isosceles prism, a first right-angle prism and a second right-angle prism, the binocular telescope further comprises a projection display assembly, where the projection display assembly includes a display, an imaging lens A, a plane mirror and an imaging lens B, where the display is provided above a reflection and transmission face of a roof prism, an image of the display is reflected by the reflection and transmission face of the provided roof prism to the imaging lens A along an incident optical axis, is reflected by the plane mirror, and then passes through the imaging lens B so as to be projected to a beam-splitting face B for reflection; and a detector B is provided in parallel with and above the reflection and transmission face of the isosceles prism, an observation focal plane A is provided on an outer side of the first right-angle prism, in the detector B, an image is formed through an exit optical axis A, in the observation focal plane A, an image is formed through an exit optical axis B, and the two intersect on a beam-splitting face A; where the beam-splitting face A and the beam-splitting face B are formed by coating a beam splitting film on the hypotenuse faces of the first right-angle prism and the second right-angle prism respectively, and in one of two optical paths of two barrels of the binocular telescope, an emission device is mounted in a position equivalent to that of the detector B.
Preferably, the binocular telescope includes an objective assembly, a beam-splitting and image-combining prism system and an eyepiece assembly, where the beam-splitting and image-combining prism system is provided between the objective assembly and the eyepiece assembly, and the beam-splitting and image-combining prism system includes a roof prism and a composite prism; in one of two barrels of the binocular telescope, the composite prism is composed of an isosceles prism, a right-angle prism A and a right-angle prism B, where the right-angle prism A and the right-angle prism B have the same shape and symmetrically abut on two isosceles faces of the isosceles prism, respectively; and in the other barrel, the composite prism is composed of a right-angle prism A and a right-angle prism, where a right-angle face of the right-angle prism is longer than a hypotenuse face of the right-angle prism A, and the right-angle face abuts on the hypotenuse face of the right-angle prism A.
A lens coating method for a binocular telescope with digital display and laser ranging functions includes:

step 1: cleaning treatment: firstly, cleaning the glass sheet, that is, soaking it in clean water for 5 to 10 minutes, taking it out, and then rinsing it in a water pipe for 3 to 5 minutes;
step 2: drying treatment: performing drying after cleaning, that is, dehydrating the cleaned glass sheet with isopropanol, drying the dehydrated substrate through slow pulling with isopropanol, and then placing it in a dust-free coating constant-temperature oven to bake it at 60°C to 75°C for 5 hours;
step 3: hardening treatment: immersing the glass sheet in a methyl silicone resin strengthening solution, with a hardening treatment temperature of 115°C to 125°C; and after 2 hours, taking out the glass sheet and sending it to a drying oven for drying and curing, with a drying temperature of 120°C, and a curing time of 60 minutes;
step 4: annealing treatment: performing annealing on the hardened glass sheet;
step 5: secondary cleaning: placing the annealed glass sheet in a vacuum coating chamber, and performing ion bombardment on a lens substrate with a Hall ion source for 3 to 5 minutes; and
step 6: coating with waterproof film layers: keeping a vacuum degree in the vacuum coating chamber greater than or equal to 5.0×10^-3 Pa, simultaneously keeping a temperature in the vacuum coating chamber at 50°C to 70°C, and bombarding beeswax with the Hall ion source, where after the beeswax is evaporated, it is deposited on outer surfaces on both sides of the glass sheet in the form of nano-scale molecules, with thicknesses of 60 nm to 100 nm, and finally colourless waterproof film layers of beeswax are formed.

The technical effects and advantages of the present invention are as follows:

(1) In the present invention, the mounting groove and the limiting block are provided on an inner side of a side of an objective hole of the binocular telescope body, the glass sheet is provided on an outer side of the limiting block, an outer side of the glass sheet is connected with the limiting plate in a clamping manner, an outer side of the limiting plate is threadingly and fixedly connected to an inner side of the mounting groove with the thread, such that the glass sheet can be effectively clamped to the inner side of the objective hole of the binocular telescope body, and the two ends on the outer side of the limiting plate being both fixedly connected with the dial blocks can effectively help the limiting plate to rotate, thereby facilitating disassembly of the glass sheet, protecting an internal lens from water vapour and dust, improving the use safety of internal components of the binocular telescope body, and prolonging the service life.
(2) In the present invention, coating on the glass sheet can effectively improve the use strength of the glass sheet, reduce the adhesion of water vapour, make the binocular telescope body to keep clear all the time when in use, reduce the adhesion of dust, effectively increase the clarity of the glass sheet, and improve the use effect of the binocular telescope body.
(3) In the present invention, by combining the first right-angle prism, the isosceles prism and the second right-angle prism into the composite prism which is such a simplified optical system, the projection display assembly is simplified. It is possible to further provide a transmission-type display device 12 directly on a side of the first right-angle prism, where the transmission-type display device 12 may be an LCD or an OLED. In this way, a laser ranging binocular telescope is further formed, which can effectively perform ranging and reading, and the use effect is improved.

Brief Description of the Drawings

FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is a schematic enlarged view of the structure of part A in FIG. 1;
FIG. 3 is a schematic structural view of a main body of a limiting plate in the present invention;
FIG. 4 is a schematic structural view in cross-section of the present invention;
FIG. 5 is an optical system view of the present invention having a composite prism;
FIG. 6 is a schematic structural view of a main body of a composite prism in the present invention;
FIG. 7 is an optical system view of the present invention having a composite prism with another structure;
FIG. 8 is a schematic structural view of a main body of a composite prism with another structure in the present invention; a;
FIG. 9 is a schematic structural view of a main body of a roof prism in the present invention.

In the figures: 1 - binocular telescope body; 101 - adjustment shaft; 102 - mounting groove; 103 - limiting block; 2 - glass sheet; 3 - limiting plate; 301 - dial block; 302 - thread; 4 - first lens; 5 - second lens; 6 - composite prism; 601 - first right-angle prism; 602 - isosceles prism; 603 - second right-angle prism; 604 - beam-splitting face A; 605 - reflection and transmission face; 606-third right-angle prism; 607 - beam-splitting face B; 7 - roof prism; 701 - roof prism reflection and transmission face; 702 - roof prism reflection face; 8 - third lens; 9 - fourth lens; 10 - fifth lens; 51 - sixth lens; 52 - seventh lens; 53 - eighth lens; 11 - incident ray; 12 - transmission-type display device; 13 - display; 14 - detector A; 15 - detector B; 16 - imaging lens A; 17 - plane mirror; 18 - imaging lens B; 19 - exit optical axis A; 20 - exit optical axis B; 21 - incident optical axis of display; 22 - emission device.

Detailed Description of Embodiments

The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings for the embodiments of the present invention; and obviously, the embodiments described are merely some, rather than all, of the embodiments of the present invention. On the basis of the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.
The present invention provides a binocular telescope with digital display and laser ranging functions as shown in FIG. 1 to FIG. 7. The binocular telescope includes:

a binocular telescope body 1, with an adjustment shaft 101 for adjusting an angle of the binocular telescope body 1 being provided in the middle of the binocular telescope body 1;
a glass sheet 2 for shielding and protecting internal components of the binocular telescope body 1; and
a limiting plate 3 for limiting and fixing the glass sheet 2.

A mounting groove 102 and a limiting block 103 are provided on an inner side of the binocular telescope body 1, the mounting groove 102 and the limiting block 103 are both fixedly connected to the inner side of the binocular telescope body 1, and the mounting groove 102 is provided on an outer side of the limiting block 103. The limiting block 103 is provided on the inner side of the binocular telescope body 1 to facilitate limiting of the glass sheet 2. The limiting block 103 is provided in a ring shape and is provided on an inner side of an objective barrel of the binocular telescope body 1. After the glass sheet 2 is placed in the objective barrel, the arrangement of the limiting block 103 can effectively limit the glass sheet 2 in a clamping manner. With the arrangement of the mounting groove 102 which is provided with a thread on its inner side, it is convenient to threadingly and fixedly connect the limiting plate 3 to the inner side of the mounting groove 102, so as to limit the glass sheet 2.
As shown in Figs 4~6 and 9, under the condition that a composite prism 6 is composed of an isosceles prism 602, a first right-angle prism 601 and a second right-angle prism 603. In the present invention, a visible ray imaged by an objective enters a roof prism 7 along an optical axis 11, is reflected by a roof prism reflection (internal reflection and external reflection) and transmission face 701, then is reflected by a roof prism reflection face 702, exits from the roof prism reflection (internal reflection and external reflection) and transmission face 701 of the roof prism 7, and enters a composite prism 6 composed of the first right-angle prism 601, the isosceles prism 602 and the third right-angle prism 603. The ray passes through a beam-splitting face B607, is reflected by a reflection and transmission face 605, and reaches another beam-splitting face A604. The ray in the visible light spectrum directly passes through the beam-splitting face A604, exits from the first right-angle prism 601, and reaches an observation focal plane along an exit optical axis 20. A laser ray reflected by a measured target for ranging is reflected off the beam-splitting face A604, exits from a reflection and transmission face 605 of the isosceles prism 602, and reaches a detector A14. Due to the reversibility of optical paths, in one of two optical paths of the laser ranging binocular telescope, an emission device 22 may be mounted in a position equivalent to that of the detector A14, so it is possible that the laser is emitted from this objective as a collimated beam. In this way, the group of prisms can transfer a visible light image from the objective to the eyepiece for observation by eyes, and at the same time the ranging can be implemented with a laser beam.
An outer side of the limiting plate 3 is provided with a thread 302, the thread 302 is provided in concert with the mounting groove 102, the limiting plate 3 is threadingly and fixedly connected to an inner side of the mounting groove 102 with the thread 302, and dial blocks 301 are symmetrically and fixedly connected to two ends on the outer side of the limiting plate 3. The inner side of the limiting plate 3 is hollowed out, and the outer side is used to limit the glass sheet 2, which will not affect viewing. With the arrangement of the thread 302, it is convenient to threadingly and fixedly connect the limiting plate 3 to the inner side of the mounting groove 102. With the dial blocks 301 being provided on the outer side of the limiting plate 3, it is convenient to pinch the dial blocks 301 on both sides so as to rotate the limiting plate 3.
An objective assembly, a beam-splitting and image-combining prism system and an eyepiece assembly are provided on the inner side of the binocular telescope body 1, the beam-splitting and image-combining prism system is provided between the objective assembly and the eyepiece assembly, and the beam-splitting and image-combining prism system includes a composite prism 6 and a roof prism 7. An object to be observed at a distance can be imaged through the objective assembly. A visible light image formed by the objective assembly and a red light image of a display 13 may be observed at the same time through the eyepiece assembly. The beam-splitting and image-combining prism system may transmit rays, so as to facilitate transmission of images obtained from the objective assembly to the eyepiece assembly for observation.
As shown in Figs 4~6 and 9, the composite prism 6 is composed of the first right-angle prism 601, the isosceles prism 602 and the second right-angle prism 603, where the first right-angle prism 601 and the second right-angle prism 603 have the same shape and symmetrically abut on two isosceles faces of the isosceles prism 602, respectively. Wherein the beam-splitting face A is formed by coating a beam splitting film on the hypotenuse faces of the first right-angle prism, and the beam-splitting face B is formed by coating a beam splitting film on the hypotenuse faces of the second right-angle prism.
An imaging lens B18 in parallel to an reflection and transmission face 605 is arranged at a distance from the reflection and transmission face 605 of the isosceles prism 602, and arrange a plane mirror 17 and an imaging lens A16 located on the plane mirror light axis; a display 13 is arranged above a roof prism reflection (internal reflection and external reflection) and transmission face 701, the image of the display 13 is reflected to the imaging lens A16 along the incident optical axis 21 of display through the roof prism reflection and transmission face 701, the image is projected and reflected on the beam-splitting face B607 after passing through the plane mirror 17 and then the imaging lens B18; a detector A14 is arranged in parallel above the reflection and transmission face 605 of the isosceles prism 2, the outside of the first right-angle prism 601 is provided with an observation focal plane, the detector A14 is imaged by an exit optical axis A19, the observation focal plane is imaged by an exit optical axis B20, and both of them are intersected on the beam-splitting face A604.
The requirements for the coating of the beam splitting surface A and the beam splitting surface B include the following: under the condition that a wavelength is 400~635±15nm, Tave≥98%, Tmin≥96%, T550≥99%; under the condition that the wavelength is 670~720±20nm, Tave≥90%, Tave is the average transmittance, Tmin is the minimum transmittance, T550 is the transmittance when the wavelength is 550nm; full-surface coating on the hypotenuse face of the first right-angle prism and the second right-angle prism. As a result, the blue spot in the center of the field of view can be effectively avoided, and the observation effect is effectively improved; the color reproduction is improved, and the color is no longer bluish; the wavelength of the beam splitting film is more matched with the wavelength of the LED display, and the parameter display during use is brighter and clearer; the transmittance has increased by 3%, the brightness of the observed scene has been improved, and the transmittance difference between the left and right barrels of the telescope, has become smaller, reducing visual fatigue during observation.
The objective assembly includes a third lens 8, a fourth lens 9 and a fifth lens 10. The third lens 8, the fourth lens 9 and the fifth lens 10 are all provided in a same axial direction. The eyepiece assembly includes a first lens 4 and a second lens 5. The first lens 4 and the second lens 5 are both provided in a same axial direction. A sixth lens 51 and seventh lens 52 are provided between the first lens 4 and the second lens 5, the sixth lens 51 and the seventh lens 52 are cemented together. An eighth lens 53 is provided between the second lens 5 and the composite prism 6. The eyepiece assembly has a total of five lenses, increased from the original three to five. The eighth lens 53 and the other four lenses are assembled on both sides of a diaphragm. The eighth lens 53 is fixed with glue. The other four lenses are fixed by a metal diaphragm and a spacer matched with an eyepiece barrel. The material of the entire eyepiece assembly is ZK9B and ZF52 high-refractive materials. For the entire eyepiece assembly, in terms of the imaging effect, the phase difference is reduced, the flat field is improved, the chromatic aberration is reduced, the degree of colour reproduction is increased, and the distortion is also reduced. The seventh lens not only plays a role of imaging in the entire eyepiece optical system, but also plays a role of a diaphragm in eliminating stray light, which improves the use effect.
As shown in Figs 6 and 9, an angle α of the roof prism 7 is 55° to 64°, an angle β of the first right-angle prism 601 and that of the second right-angle prism 603 are 27° to 32°, and an angle δ of the isosceles prism 602 is 110° to 128°. The angle α of the roof prism 7 is preferably 60°, the angle β of the first right-angle prism 601 and that of the second right-angle prism 603 are preferably 30°, and the angle δ of the isosceles prism 602 is preferably 120°.
As shown in Figs 4, 7 and 8, the beam-splitting and image-combining prism system comprises a composite prism 6 and a roof prism 7, and the composite prism 6 is composed of a first right-angle prism 601 and a third right-angle prism 606, wherein , a right-angle face of the third right-angle prism 606 is longer than a hypotenuse face of the first right-angle prism 601, and the right-angle face of the third right-angle prism 606 abuts on the hypotenuse face of the first right-angle prism 601;
The composite prism 6 has only one beam-splitting face A604, a detector B15 is arranged in parallel on a reflection and transmission face 605 of the third right-angle prism 606, the observation focal plane on the outside of the first right-angle prism 601 is provided with a transmission-type display device 12, and the transmission-type display device 12 may be an LCD or an OLED. The transmission-type display device 12 may display the graphics and text information as: graphs, signs, symbols, or characters.
The reflection and transmission face 605 and the beam-splitting face A604 are provided on an inner side of the composite prism 6. A roof prism reflection (internal reflection and external reflection) and transmission face 701 and a roof prism reflection face 702 are provided on an inner side of the roof prism 7. An incident ray 11 is transmitted inside the binocular telescope body 1, and the incident ray 11 passes through the objective assembly from a side of an objective of the binocular telescope body 1, then passes through the beam-splitting and image-combining prism system, and finally passes through the eyepiece assembly to reach eyes, where a transmission direction in the beam-splitting and image-combining prism system is as follows: the incident ray 11 passes through the roof prism 7 and is transmitted to the roof prism reflection (internal reflection and external reflection) and transmission face 701, is reflected by the roof prism reflection (internal reflection and external reflection) and transmission face 701 onto the roof prism reflection face 702, then is reflected by the roof prism reflection face 702 to the first reflection and transmission face 605, and passes through the beam-splitting face A604 into the eyepiece assembly and thus into the eyes.
Wherein, the beam-splitting face A604 is formed by coating the entire hypotenuse face of the first right-angle prism 601 with a beam-splitting film.The requirements for the coating of the beam splitting surface A604 include the following: under the condition that a wavelength is 400~635±15nm, Tave≥98%, Tmin≥96%, T550≥99%,; under the condition that the wavelength is 670~720±20nm, Tave≥90%, Tave is the average transmittance, Tmin is the minimum transmittance, T550 is the transmittance when the wavelength is 550nm.
In the present invention, a visible ray imaged by the objective enters the roof prism 7 along the optical axis, is reflected by the roof prism reflection (internal reflection and external reflection) and transmission face 701 then is reflected by the roof prism reflection face 702, exits from the reflection (internal reflection and external reflection) and transmission face 701 of the roof prism 7, and enters the composite prism 6 composed of the first right-angle prism 601 and the third right-angle prism 606. The ray reaches a beam-splitting face A604. The ray in the visible light spectrum directly passes through the beam-splitting face A604, exits from the right-angle prism 601, and reaches, along an exit optical axis B20, an observation focal plane on which the transmission-type display device 12 is provided. A laser ray reflected by a measured target for ranging is reflected off the beam-splitting face A604, exits from the reflection and transmission face 605 of the third right-angle prism 606 and reaches a detector B15. Due to the reversibility of optical paths, in one of two optical paths of the laser ranging binocular telescope, an emission device 22 may be mounted in a position equivalent to that of the detector, so it is possible that the laser is emitted from this objective as a collimated beam. In this way, the group of prisms can transfer a visible light image from the objective to the eyepiece for observation by eyes, and at the same time the ranging can be implemented with a laser beam.
A lens coating method for a binocular telescope with digital display and laser ranging functions includes:

step 1: cleaning treatment: firstly cleaning the glass sheet 2, that is, soaking it in clean water for 5 to 10 minutes, taking it 2 out, and then rinsing it in a water pipe for 3 to 5 minutes;
step 2: drying treatment: performing drying after cleaning, that is, dehydrating the cleaned glass sheet 2 with isopropanol, drying the dehydrated substrate through slow pulling with isopropanol, and then placing it in a dust-free coating constant-temperature oven to bake it at 60°C to 75°C for 5 hours;
step 3: hardening treatment: immersing the glass sheet 2 in a methyl silicone resin strengthening solution, with a hardening treatment temperature of 115°C to 125°C; and after 2 hours, taking out the glass sheet 2 and sending it to a drying oven for drying and curing, with a drying temperature of 120°C, and a curing time of 60 minutes;
step 4: annealing treatment: performing annealing on the hardened glass sheet 2;
step 5: secondary cleaning: placing the annealed glass sheet 2 in a vacuum coating chamber, and performing ion bombardment on a lens substrate with a Hall ion source for 3 to 5 minutes; and
step 6: coating with waterproof film layers: keeping a vacuum degree in the vacuum coating chamber greater than or equal to 5.0×10^-3 Pa, simultaneously keeping a temperature in the vacuum coating chamber at 50°C to 70°C, and bombarding beeswax with the Hall ion source, where after the beeswax is evaporated, it is deposited on outer surfaces on both sides of the glass sheet 2 in the form of nano-scale molecules, with thicknesses of 60 nm to 100 nm, and finally colourless waterproof film layers of beeswax are formed.

Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention but not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments may still be modified, or some technical features therein may be equivalently replaced. Any modifications, equivalent replacements, improvements, and the like made within the spirit and principle of the present invention shall be included into the scope of protection of the present invention.

Claims

A binocular telescope with digital display and laser ranging functions, comprising:
a binocular telescope body (1), with an adjustment shaft (101) for adjusting an angle of the binocular telescope body (1) being provided in the middle of the binocular telescope body (1);

a glass sheet (2) for shielding and protecting internal components of the binocular telescope body (1); and

a limiting plate (3) for limiting and fixing the glass sheet (2);

characterized in that a mounting groove (102) and a limiting block (103) are provided on an inner side of the binocular telescope body (1), the mounting groove (102) and the limiting block (103) are both fixedly connected to the inner side of the binocular telescope body (1), and the mounting groove (102) is provided on an outer side of the limiting block (103); and

an outer side of the limiting plate (3) is provided with a thread (302), the thread (302) is provided in concert with the mounting groove (102), the limiting plate (3) is threadingly and fixedly connected to an inner side of the mounting groove (102) with the thread (302), and dial blocks (301) are symmetrically and fixedly connected to two ends on the outer side of the limiting plate (3).
The binocular telescope with digital display and laser ranging functions according to claim 1, characterized in that an objective assembly, a beam-splitting and image-combining prism system and an eyepiece assembly are provided on the inner side of the binocular telescope body (1), the beam-splitting and image-combining prism system is provided between the objective assembly and the eyepiece assembly, or the composite prism (6) is composed of a first right-angle prism (601) and a third right-angle prism (606); wherein a right-angle face of the third right-angle prism (606) is longer than a hypotenuse face of the first right-angle prism (601), and the right-angle face abuts on the hypotenuse face of the first right-angle prism (601).
The binocular telescope with digital display and laser ranging functions according to claim 2, characterized in that an objective assembly comprises a third lens (8), a fourth lens (9) and a fifth lens (10), wherein the third lens (8), the fourth lens (9) and the fifth lens (10) are all provided in a same axial direction, and an eyepiece assembly comprises a first lens (4) and a second lens (5), wherein the first lens (4) and the second lens (5) are both provided in a same axial direction, a sixth lens (51) and a seventh lens (52) are provided between the first lens (4) and the second lens (5), an eighth lens (53) is provided between the second lens (5) and the composite prism (6).
The binocular telescope with digital display and laser ranging functions according to claim 2, characterized in that, under the condition that the composite prism (6) is composed of a first right-angle prism (601) and a third right-angle prism, a reflection and transmission face (605) and a beam-splitting face A (604) are provided on the the composite prism (6), and a roof prism reflection and transmission face (701) and a roof prism reflection face (702) are provided on an inner side of the roof prism;
a detector B (15) is provided in parallel with and above the reflection and transmission face (605) of the third right-angle prism (606), the observation focal plane on the outside of the first right-angle prism is provided with a transmission-type display device (12);

in one of two optical paths of two barrels of the binocular telescope, an emission device (22) is mounted in a position equivalent to that of the detector B (15);

the beam splitting surface A is formed by coating a beam splitting film on the hypotenuse face of the first right-angle prism (601).
The binocular telescope with digital display and laser ranging functions according to claim 3, characterized in that, the requirements for the coating of the beam splitting surface A include the following:
under the condition that a wavelength is 400∼635±15nm, Tave≥98%, Tmin≥96%, T550≥99%,; under the condition that the wavelength is 670~720±20nm, Tave≥90%, Tave is the average transmittance, Tmin is the minimum transmittance, T550 is the transmittance when the wavelength is 550nm;

full-surface coating on the hypotenuse face of the first right-angle prism (601).
The binocular telescope with digital display and laser ranging functions according to claim 2, characterized in that, under the condition that the composite prism (6) is composed of an isosceles prism (602), a first right-angle prism (601) and a second right-angle prism (603), the binocular telescope further comprises a projection display assembly, wherein the projection display assembly comprises a display (13), an imaging lens A (16), a plane mirror (17) and an imaging lens B (18), wherein the display (13) is provided above a reflection and transmission face (605) of a roof prism (7), an image of the display (13) is reflected by the reflection and transmission face (605) of the provided roof prism (7) to the imaging lens A (16) along an incident optical axis (21), is reflected by the plane mirror (17), and then passes through the imaging lens B (18) so as to be projected to a beam-splitting face B (607) for reflection; and a detector A (14) is provided in parallel with and above the reflection and transmission face (605) of the isosceles prism (602), an observation focal plane A is provided on an outer side of the first right-angle prism (601), in the detector A (14), an image is formed through an exit optical axis A (19), in the observation focal plane A, an image is formed through an exit optical axis B (20), and the two intersect on a beam-splitting face A (604);
wherein the beam-splitting face A (604) and the beam-splitting face B (607) are formed by coating a beam splitting film on the hypotenuse faces of the first right-angle prism (601) and the second right-angle prism (603) respectively, and in one of two optical paths of two barrels of the binocular telescope, an emission device (22) is mounted in a position equivalent to that of the detector A (14).
The binocular telescope with digital display and laser ranging functions according to claim 6, characterized in that, the requirements for the coating of the beam splitting surface A and the beam splitting surface B include the following:
under the condition that a wavelength is 400~635±15nm, Tave≥98%, Tmin≥96%, T550≥99%,; under the condition that the wavelength is 670~720±20nm, Tave≥90%, Tave is the average transmittance, Tmin is the minimum transmittance, T550 is the transmittance when the wavelength is 550nm;

full-surface coating on the hypotenuse face of the first right-angle prism (601) and the second right-angle prism (603).
A binocular telescope with digital display and laser ranging functions, characterized by comprising an objective assembly, a beam-splitting and image-combining prism system and an eyepiece assembly, wherein the beam-splitting and image-combining prism system is provided between the objective assembly and the eyepiece assembly, and the beam-splitting and image-combining prism system comprises a roof prism (7) and a composite prism (6);
in one of two barrels of the binocular telescope, the composite prism (6) is composed of an isosceles prism (602), a first right-angle prism (601) and a second right-angle prism (603), wherein the first right-angle prism (601) and the second right-angle prism (603) have the same shape and symmetrically abut on two isosceles faces of the isosceles prism (602), respectively; and in the other barrel, the composite prism (6) is composed of a first right-angle prism (601) and a third right-angle prism (606), wherein a right-angle face of the third right-angle prism (606) is longer than a hypotenuse face of the first right-angle prism (601), and the right-angle face of the third right-angle prism (606) abuts on the hypotenuse face of the third right-angle prism (606).
A lens coating method for the binocular telescope with digital display and laser ranging functions of claim 1, characterized by comprising:
step 1: cleaning treatment: firstly, cleaning the glass sheet (2), that is, soaking it in clean water for 5 to 10 minutes, taking it out, and then rinsing it in a water pipe for 3 to 5 minutes;

step 2: drying treatment: performing drying after cleaning, that is, dehydrating the cleaned glass sheet (2) with isopropanol, drying the dehydrated substrate through slow pulling with isopropanol, and then placing it in a dust-free coating constant-temperature oven to bake it at 60°C to 75°C for 5 hours;

step 3: hardening treatment: immersing the glass sheet (2) in a methyl silicone resin strengthening solution, with a hardening treatment temperature of 115°C to 125°C; and after 2 hours, taking out the glass sheet (2) and sending it to a drying oven for drying and curing, with a drying temperature of 120°C, and a curing time of 60 minutes;

step 4: annealing treatment: performing annealing on the hardened glass sheet (2);

step 5: secondary cleaning: placing the annealed glass sheet (2) in a vacuum coating chamber, and performing ion bombardment on a lens substrate with a Hall ion source for 3 to 5 minutes; and

step 6: coating with waterproof film layers: keeping a vacuum degree in the vacuum coating chamber greater than or equal to 5.0×10^-3 Pa, simultaneously keeping a temperature in the vacuum coating chamber at 50°C to 70°C, and bombarding beeswax with the Hall ion source, wherein after the beeswax is evaporated, it is deposited on outer surfaces on both sides of the glass sheet (2) in the form of nano-scale molecules, with thicknesses of 60 nm to 100 nm, and finally colourless waterproof film layers of beeswax are formed.